The Nine Mile Lake Boat Ramp is a government-operated public launch facility on Nine Mile Lake in the Township of Muskoka Lakes, Ontario. It is located along Nine Mile Lake Road and provides transient boaters with access to this roughly 7.

5-mile-long finger lake, carved from the Canadian Shield's characteristic Muskoka granite. The ramp sits adjacent to Nine Mile Marina, which serves as the primary hub for the lake's cottage community. A dock and parking area accompany the launch.

Because many of the lake's approximately 90 cottages are accessible only by water, the boat ramp is an important point of entry for reaching the interior of the lake and connecting to nearby portage routes, including the trail toward Turtle Lake.